One accident haunted a young boy’s heart—

Thirteen years ago, in a house near Yokohama’s Chinatown, a young boy’s father was found dead in the bathroom. The police ruled it an accident, but something about it remained mysterious…After graduating from high school, 22-year-old Ryuichi Koyanagi lives a life of idleness, neither in education nor at work. One day, a woman who has fallen victim to a scam involving an illegal part-time job comes to him for help. This leads Ryuichi, together with his childhood friend Kinta Iwashimizu, now a police officer, on a path to uncover the truth and get closer to the mystery surrounding his father’s death.